Synthesis and Optical Properties of Lead-Free Cesium Tin Halide Perovskite Nanocrystals

Metal halide perovskite crystal structures have emerged as a class of optoelectronic materials, which combine the ease of solution processability with excellent optical absorption and emission qualities. Restricting the physical dimensions of the perovskite crystallites to a few nanometers can also unlock spatial confinement effects, which allow large spectral tunability and high luminescence quantum yields at low excitation densities. However, the most promising perovskite structures rely on lead as a cationic species, thereby hindering commercial application. The replacement of lead with nontoxic alternatives such as tin has been demonstrated in bulk films, but not in spatially confined nanocrystals. Here,…

• RS
  Royal Society
• CT
  Cambridge Trust
• GC
  Gates Cambridge Trust
• EA
  Engineering and Physical Sciences Research Council

  Awards: EP/M005143/1, EP/G060738/1, EP/M005143/1, EP/G060738/1, EP/M006360/1, EP/M507301/1, EP/G037221/1